Posted by **Sue 12** on Thursday, May 30, 2013 at 11:54pm.

The computer-science aptitude score, x, and the achievement score, y (measured by a comprehensive final), were measured for 10 students in a beginning computer-science course. The results were as follows. (Give your answers correct to two decimal places.)

x 7 10 19 9 20 22 6 13 18 15

y 29 27 28 33 24 15 25 23 21 18

(a) Find the equation of the line of best fit.

yhat = + x

(b) Find se2.

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